Pin Assignments

COM Port Interface

The COM port connects to a PC for front panel emulation, to an ASCII terminal or printer for alarms, to an async terminal, or to a network device (e.g., a router) for SNMP or Telnet applications. The COM port connector is an 8-position keyed modular connector (Table D-3). The data signals on this port are referenced to a DTE interface.

The COM port-to-PC cable is shown in Figure D-4and the COM port-to-terminal/printer cable is shown in Figure D-5.

Table D-3. COM Port Connector

Signal

Direction

Pin Number

 

 

 

DCE Transmit Clock

From DSU/CSU

1

 

 

 

DCE Receive Data

From DSU/CSU

2

 

 

 

Signal Ground

3

 

 

 

DCE Transmit Data

To DSU/CSU

4

 

 

 

DCE Data Terminal Ready

To DSU/CSU

5

 

 

 

DCE Carrier Detect

From DSU/CSU

6

 

 

 

DCE Request-to-Send

To DSU/CSU

7

 

 

 

DCE Receive Clock

From DSU/CSU

8

 

 

 

3162-A2-GB20-40

August 2000

D-5

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Image 145
HP 3162 manual COM Port Interface, Table D-3. COM Port Connector Signal Direction Pin Number